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Billet steel vs. 4340 nontwist steel cranks

Moparmatt72, I'm not really sure on that one, I know for a fact, that it helps to realign molecules in metals & strengthen them, I'm not sure if it would make it more brittle/too stiff with-out any flexibility &/or more prone to cracking/breaking or not, my guess would be it would help/be beneficial... But that is just a guess.... Need to talk to a metallurgist, my engineering back ground is Architecture/Drafting Design {construction/building related} & Utility Truck Building, Aerial Equipment, Golf Equipment Mfgrs. use it as a widely excepted practice, to strengthen club heads so the can make them very thin & light to move the weight were they want it, also to have elasticity & rebound capabilities {spring like COR efficiency}... I know that some brake companies do it to disc brake rotors, Crager claims it last way longer & is way harder, under severe usage, I have some Cryogenic treated slotted & drilled front disc brake rotors on my 2002 F350 dually, good so far 95K miles...
 
Well I did a search and this is what I found out thought I would share:
Racing Parts
Nitrofreeze Cryogenic Treatment is the ultimate competitive advantage for any racer or motorsports’ enthusiast. The Nitrofreeze Cryogenic Treatment refines the microstructure of the metal in your racing parts, resulting in a more durable metal. In addition, wear resistance characteristics will increase in your racing parts allowing your parts to last much longer. Stress lines and micro cracks from the manufacturing process will be removed, lowering the overall chance of fatigue failure. The coefficient of friction will be lowered thus reducing friction. Engines that undergo cryogenic treatment will receive horsepower and torque gains at the high end. No matter what racing part you have cryo treated, the changes will benefit you.
Cryogenic treatment utilizes liquid nitrogen to bring the temperature of your racing parts down to -300°F. The parts are then kept at this temperature for 24 hours. This relieves the residual stresses and produces a more consistent and uniform material. The benefits of this process are increased part life, less wear, and improved performance.
Engines: You have the option to treat your whole engine or specific parts. Cryogenically treated engines and components will exhibit less wear and will be less prone to cracking. Engine blocks that are treated prior to final honing will benefit from reduced friction, which will increase horsepower and torque. Cryogenic engine treatment will make your engine components more durable and longer lasting.
Rear Ends: Treating rear ends will reduce wear and improve crack resistance. Your ring and pinion gears will be less susceptible to chipped teeth and overall failure.
Transmissions: Cryogenic treatment of transmissions will increase the life of all internal parts as well as the casing. Gear failure and wear will be reduced. There have been reports that smoother shifting and better clutch performance have resulted from transmission treatment. Treatment is available for both automatic and manual transmissions.
Bearings: Treated bearings will last longer and be more resistant to wear. They will also roll smoother. Axle and wheel bearings are recommended.

Dont know about you but Im sold, and theres a place here in socal just in San Diego. Rods are $7.50 ea. blocks can be done I think for $200
 
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